When "The Amazing Race" season 21 returned on Sunday, October 21, the remaining teams departed from Surabaya, Indonesia to Bangladesh. As team number one last week, Abbie & Ryan started off first, but they ended up boarding the same plane with the other teams since there's only one flight to Bangladesh.
Once arriving, the teams headed to a bus repair shop and faced Roadblock, where they had to repair one bus each. They had to fill in the damage, sand it, remove three seats and bring them to a refurbish area to get their next clue.
James & Abba picked another option, Fast Forward, which required them to become rat catching assistants. They had to fill bags with dead rats from various locations before heading directly to the pit stop.
At the Roadblock, Abbie & Ryan finished fixing the bus first and headed to the next direction. Meanwhile, James & Jaymes as well as Gary & Will had to start their work all over again. Rob & Kelly finished second, followed by Natalie & Nadiya.
The next destination was Kawran Bazar Shootkir Market, where they had to find a shop with a smelly bag of dried fish and find a colored one to receive their next clue. The clue led them to Detour, in which they would choose between Pound the Metal and Pound the Cotton. In Pound the Metal, they would make metal into into a sharp-pointed tool, while in Pound the Cotton they would make cotton into a mattress.
When some of the teams were still working on the Detour challenge, James & Abba already collected all their rats. They headed to the Pit Stop at Shambazar Chan Mia Ghat and won a trip for two to St. James Club in the island of Antigua.
Abbie & Ryan were still struggling with their mattress when Natalie & Nadiya as well as Rob & Kelly finished the Detour. Once they finished the mattress, Abbie & Ryan caught up with the other teams and arrived second at the pit stop.
Natalie & Nadiya arrived the third, followed by Rob & Kelly, who had to go back and re-do the route to Swarighet before they checked in because they took the wrong riverboat. Josh & Brent were team number four, followed by Rob & Kelly, James & Jaymes, and Trey & Lexi. Gary & Will also had to go back the route and finished the last, so they were eliminated at the end of the fourth leg.